Candidate: CVE-2021-45098
PublicDate: 2021-12-16 05:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45098
 https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942
 https://github.com/OISF/suricata/commit/50e2b973eeec7172991bf8f544ab06fb782b97df
 https://redmine.openinfosecfoundation.org/issues/4710
 https://github.com/OISF/suricata/releases
Description:
 An issue was discovered in Suricata before 6.0.4. It is possible to
 bypass/evade any HTTP-based signature by faking an RST TCP packet with
 random TCP options of the md5header from the client side. After the
 three-way handshake, it's possible to inject an RST ACK with a random TCP
 md5header option. Then, the client can send an HTTP GET request with a
 forbidden URL. The server will ignore the RST ACK and send the response
 HTTP packet for the client's request. These packets will not trigger a
 Suricata reject action.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N [7.5 HIGH]


Patches_suricata:
upstream_suricata: released (1:6.0.4-1)
trusty_suricata: ignored (out of standard support)
xenial_suricata: ignored (out of standard support)
bionic_suricata: needs-triage
jammy_suricata: not-affected (1:6.0.4-3)
devel_suricata: not-affected (1:6.0.4-3)